Editorial Comment. 241 
and Mt. Josephine westward. That the Chicago outlet, after 
holding a bight of 15 feet above the present lake Michigan, 
was uplifted for some time to 30 feet, with accumulation of 
vast amounts of sand drifted to the south end of lake Michi- 
gan in each of its stages above its present hight, shows that 
the epeirogenic re-elevation from the Champlain subsidence 
had not always and through all the Laurentian lake region a 
differential increase from south to north and northeast. Once 
during the very long continuance of the Chicago outlet and 
of lake Warren, the uplift was greater at the outlet than on 
the contiguous southwestern part of the lake Michigan basin. 
Therefore we need not be surprised that the highest shore of 
the fully expanded lake Warren fails to rise much above tin- 
present lake south of Green bay. 
Four glacial lakes preceded and by their union produced 
the maximum stage of lake Warren, namely, the Western Su- 
perior lake, the glacial lake Michigan, the Western Erie lake, 
and the Pewamo or Erie-Huron lake, which last pre-eminently 
may be regarded as the early lake Warren, in accordance with 
Spencer's proposal of that name. Following lake Warren, 
when the glacial recession permitted outflow from the St. 
Lawrence basin eastward to the Susquehanna, Mohawk, and 
Hudson rivers, there ensued lake Algonquin, represented by 
the Algonquin or Nipissing beach, with outflow along the 
present bed of lake Erie; lakes Lundy and Newberry; and 
lakes Iroquois, Hudson-Champlain, and St. Lawrence. Thus 
a family of eleven important glacial lakes existed in the St. 
Lawrence basin during the departure of the ice-sheet, distin- 
guished b} r different outlets and areas, and mostly marked by 
more numerous beaches northward than southward because 
the land was being differentiall} T uplifted. w. u. 
Antarctica. 
The American Society of Naturalists in its recent Philadel- 
phia meeting, held at the same time and in association with 
that of the Geological Society of America, during the Christ- 
mas holidays, discussed very fully the origin and relations of 
the floras and faunas of the Antarctic and adjacent regions. 
The series of papers on this subject was as follows: 
The Geology of the Anton-tic Regions. Ancelo Heilprin, Philadel 
phia Academy of Natural Sciences. 
